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Quasifree ( p , 2p ) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength

Atar, L, Paschalis, S, Barbieri, Carlo, Bertulani, C, Díaz Fernández, P, Hollington, M, Najafi, M, Panin, V, Alvarez-Pol, H, Aumann, T , Avdeichikov, V, Beceiro-Novo, S, Bemmerer, D, Benlliure, J, Boillos, J, Boretzky, K, Borge, M, Caamaño, M, Caesar, C, Casarejos, E, Catford, Wilton, Cederkall, J, Chartier, M, Chulkov, L, Cortina-Gil, D, Cravo, E, Crespo, R, Dillmann, I, Elekes, Z, Enders, J, Ershova, O, Estrade, A, Farinon, F, Fraile, L, Freer, M, Galaviz Redondo, D, Geissel, H, Gernhäuser, R, Golubev, P, Göbel, K, Hagdahl, J, Heftrich, T, Heil, M, Heine, M, Heinz, A, Henriques, A, Hufnagel, A, Ignatov, A, Johansson, H, Jonson, B, Kahlbow, J, Kalantar-Nayestanaki, N, Kanungo, R, Kelic-Heil, A, Knyazev, A, Kröll, T, Kurz, N, Labiche, M, Langer, C, Le Bleis, T, Lemmon, R, Lindberg, S, Machado, J, Marganiec-Gałązka, J, Movsesyan, A, Nacher, E, Nikolskii, E, Nilsson, T, Nociforo, C, Perea, A, Petri, M, Pietri, S, Plag, R, Reifarth, R, Ribeiro, G, Rigollet, C, Rossi, D, Röder, M, Savran, D, Scheit, H, Simon, H, Sorlin, O, Syndikus, I, Taylor, J, Tengblad, O, Thies, R, Togano, Y, Vandebrouck, M, Velho, P, Volkov, V, Wagner, A, Wamers, F, Weick, H, Wheldon, C, Wilson, G, Winfield, J, Woods, P, Yakorev, D, Zhukov, M, Zilges, A and Zuber, K (2018) Quasifree ( p , 2p ) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength Physical Review Letters, 120 (5), 052501.

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Abstract

Quasifree one-proton knockout reactions have been employed in inverse kinematics for a systematic study of the structure of stable and exotic oxygen isotopes at the R3B=LAND setup with incident beam energies in the range of 300–450 MeV=u. The oxygen isotopic chain offers a large variation of separation energies that allows for a quantitative understanding of single-particle strength with changing isospin asymmetry. Quasifree knockout reactions provide a complementary approach to intermediate-energy onenucleon removal reactions. Inclusive cross sections for quasifree knockout reactions of the type AOðp; 2pÞA−1N have been determined and compared to calculations based on the eikonal reaction theory. The reduction factors for the single-particle strength with respect to the independent-particle model were obtained and compared to state-of-the-art ab initio predictions. The results do not show any significant dependence on proton-neutron asymmetry.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Atar, L
Paschalis, S
Barbieri, CarloC.Barbieri@surrey.ac.uk
Bertulani, C
Díaz Fernández, P
Hollington, M
Najafi, M
Panin, V
Alvarez-Pol, H
Aumann, T
Avdeichikov, V
Beceiro-Novo, S
Bemmerer, D
Benlliure, J
Boillos, J
Boretzky, K
Borge, M
Caamaño, M
Caesar, C
Casarejos, E
Catford, WiltonW.Catford@surrey.ac.uk
Cederkall, J
Chartier, M
Chulkov, L
Cortina-Gil, D
Cravo, E
Crespo, R
Dillmann, I
Elekes, Z
Enders, J
Ershova, O
Estrade, A
Farinon, F
Fraile, L
Freer, M
Galaviz Redondo, D
Geissel, H
Gernhäuser, R
Golubev, P
Göbel, K
Hagdahl, J
Heftrich, T
Heil, M
Heine, M
Heinz, A
Henriques, A
Hufnagel, A
Ignatov, A
Johansson, H
Jonson, B
Kahlbow, J
Kalantar-Nayestanaki, N
Kanungo, R
Kelic-Heil, A
Knyazev, A
Kröll, T
Kurz, N
Labiche, M
Langer, C
Le Bleis, T
Lemmon, R
Lindberg, S
Machado, J
Marganiec-Gałązka, J
Movsesyan, A
Nacher, E
Nikolskii, E
Nilsson, T
Nociforo, C
Perea, A
Petri, M
Pietri, S
Plag, R
Reifarth, R
Ribeiro, G
Rigollet, C
Rossi, D
Röder, M
Savran, D
Scheit, H
Simon, H
Sorlin, O
Syndikus, I
Taylor, J
Tengblad, O
Thies, R
Togano, Y
Vandebrouck, M
Velho, P
Volkov, V
Wagner, A
Wamers, F
Weick, H
Wheldon, C
Wilson, G
Winfield, J
Woods, P
Yakorev, D
Zhukov, M
Zilges, A
Zuber, K
Date : 29 January 2018
Funders : STFC
DOI : 10.1103/PhysRevLett.120.052501
Copyright Disclaimer : Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Depositing User : Melanie Hughes
Date Deposited : 08 May 2018 12:11
Last Modified : 11 Dec 2018 11:24
URI: http://epubs.surrey.ac.uk/id/eprint/846367

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